I would be interested in the website / picture from anyone on this thread.
I was given an older Wilson version of the MA40, and am working on the install now. Any advice or input would be appreciated. Niel WA7SSA Sent from my iPhone > On Jul 13, 2016, at 05:01, Mike K2MK <[email protected]> wrote: > > Hi Terry, > > I'm moving and I've just sold my MA40 with the MARB40 tilt over/rotator > base. It's a fine tower for small loads. Be careful, it's only rated at > 3sqft load when the tower is cranked down to the 21 foot level. I had a 2 > element SteppIR yagi on it and I would crank it down if winds over 20 or 30 > mph were forecasted. > > Cranking it up and down is very easy on the arm. It cranks easily but > requires 100 cranks. Tilting it over and cranking it down and back up > requires much greater effort until the mast is at the 45 degree angle. I > would have liked to have a power driven winch for that operation. > > The foundation for this mast is substantial with lots of rebar. I'm selling > my house and just had the top 12" of concrete removed so that I could > replace it with grass. It took a crew longer to remove the 12" then it did > for the crew to dig and pour the foundation in the first place. I'm thankful > I didn't have to any of the work. > > This mast can actually be handled by one person if you have moderate > equipment to help. I had a wheeled lawn cart for rolling it around and a > Harbor Freight 1 ton shop crane for taking it off of the flat bed delivery > truck and helping to engage and dis-engage the mast into the MRB40 unit. > With two people it's a very simple job. All of my experiences were good and > given the opportunity I would not hesitate to purchase another one. > > I have a personal website with lots of photos. Contact me directly if you > want the link. > k2mk at comcast dot net > > 73, > Mike K2MK > > > Terry Brown wrote >> Hello all, >> >> I am the owner if a K2, KX3, PX3, and KXPA100. I have been a ham since >> 1982, and love my Elecraft gear. I have a question for the group. I am >> moving from my current QTH in Corvallis, OR after 30 years. Currently I >> have a Rohn 25 based tower that is about 35 feet above my flat roof. On >> the >> tower is a tri-band Cushcraft ATB-34 and 2m/440 comet antennas. The beam >> and tower date from the time I became a ham. >> >> I am building a new home in an established neighborhood in West Salem, >> Oregon. The CCRs have expired, so I am not restricted from a tower setup. >> My new QTH is high in the west hills of Salem. The view to the east is >> amazing as the ground slopes away. To the west, the terrain has a slight >> rise. I am 68 yrs. old. I don't want to have to climb a tower again. >> My >> home will be two stories with the garage level under it. The peak of my >> roof will be about 34 ft. above grade. My new tower location will be >> about >> 32 feet from grade to the peak of the roof. The roofline will run N-S >> with >> the tower on the west side of the house. >> >> I have decided to purchase a new smaller lightweight crankup tower and a >> smaller tribander such as the Mosley TA-33 JR-N or NW. I have seen the >> US >> Towers MA-40, a 20-41ft. crankup as one type. It comes with a tilt over >> base add-on which would allow me to service the antenna from the ground. >> This particular two section tower can crank down to 20 ft., thus not being >> visible from the street east of the house. It's max height is 41 ft. >> which >> would put the antenna only 9-10 ft. above the roofline when transmitting >> to >> the East. I want to put a winch on the tower so I don't have to >> physically >> crank it up by hand as I get older. With this background I have two >> questions: >> >> 1. Will the yagi attached to the tower with only 9-10 ft. height above >> the roofline (41 ft. tower) be an effective radiator and receive antenna >> on >> 20-15-10 meter bands to the East? Being on the West Coast, this will be >> the >> direction of most of my mainland US contacts. To the N-W-S, the antenna >> will be 41 ft. above the ground, so no problem. >> >> 2. I am not committed to any particular crankup tower. The US Tower is >> just the one I have seen on the internet. I would be interested in any >> lighterweight fold over crank up tower up to 50 ft. I think a tubular >> constructed type tower would be my preference due to weight of >> installation. >> A triangular designed crankup may be ok, too. >> >> I know I can have a larger tower and antenna, but I want my setup to be >> neighbor friendly. I am not a contester, and will never operate over 100 >> watts. It is nice to be able to work a station if I can hear it. I also >> want the advantage of a horizontally polarized antenna with gain. I have >> been spoiled with that setup over the years. >> >> Just as an aside, my other antenna is a horizontal loop about 250 ft. in >> length that I use for all the other bands. It is up about 30 ft. >> suspended >> from the trees in my current QTH. I feed it with 450 ohm ladder into a >> 4:1 >> balun to coax. At my new QTH, we will plant two contained planters with >> 20 >> or 30 ft. bamboo on the SW and NW corners of my property where I can put a >> vertical pipe for two supports, then use the peak of my roof on the N and >> S >> side at 34 Ft. for my NE and SE contact points for my other two corners >> for >> my horizontal loop. I will feed it with the same 450 ohm ladder from the >> NE >> corner. I really like my horizontal loop because it is so quiet being >> horizontally polarized. My current one works great so I want the same >> thing >> for my new QTH. >> >> I look forward to getting some great input from this group. I have been >> amazed at the level of quality information I have seen on this group. >> >> Thanks in advance to you all. >> 73's, >> Terry Brown, N7TB > > > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Need-advice-on-Small-Tower-tp7619982p7620050.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
